材料科学
石墨烯
复合材料
复合数
润滑油
微观结构
合金
制作
钛合金
金属
冶金
纳米技术
医学
病理
替代医学
作者
Qi Yan,Biao Chen,Wenting Ye,Wan Qi Jie,Tao Zhang,Hongchao Kou,Qin Zhou,Wen-Feng Lu,Hao Wang,Jianghua Shen,Haifeng Wang,Jinshan Li
标识
DOI:10.1021/acsami.2c03564
摘要
The expected excellent lubricant effect of graphene in metals during friction and wear is rarely achieved because of the difficulty in synthesizing suitable interfaces. Particularly, the situation is more challenging in titanium (Ti) matrix composites (TMCs) because of the high chemical-interface-reaction tendency between graphene and Ti during composite fabrication. In this study, few-layered graphene (FLG) decorated with SiC nanoparticles (SiCp) was synthesized as reinforcement in Ti-6Al-4V alloy to improve the interface of the composites. It was found that interfacial SiCp not only strengthened the interface bonding by the Si solid solution but also inhibited the chemical reaction between FLG and the Ti matrix with reduced sp3 defects. The composite with 30 wt % SiC-decorated FLG showed an 86.8% decrement in wear rate compared to the unreinforced matrix, resulting in exceptionally high antiwear enhancing efficiency, which was around fourfold of the available values of other TMCs in the literature. The antiwear mechanism was investigated by thorough characterization of the interfaces and microstructures of the composites. The idea of interfacial decoration can be potentially applied to other nanocarbon/metal composites with the advantages of retaining the function performance of nanocarbon materials.
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